2026 NPPES data Pediatrics Physician NPI 1205936556 MD
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GREGORY JOHNSON, MD

Pediatrics Physician in PIEDMONT, South Carolina. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
2K
Medicare Part D claims · 132 beneficiaries · Pediatrics Physician avg: 762
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$16.68
1 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

GREGORY JOHNSON, MD filed 2,156 Medicare Part D claims in 2023 as a Pediatrics Physician in PIEDMONT, South Carolina, prescribing 88% generic.

2K
Part D claims, 2023
88%
generic prescribing
Likely
board-certified (heuristic)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

GREGORY JOHNSON, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

2,156 Top 15% higher than 85% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board certification likely (heuristic — not verified)

GREGORY JOHNSON, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about GREGORY JOHNSON, MD?

Quality data not reported

NPI registry status

Active

Issued 09/25/2006

NPI 1205936556

Primary specialty

Pediatrics Physician

High-volume

80,574 US NPIs in this specialty

Medicare Part D claims

2,156 183% vs specialty avg

2023 prescription claims

Specialty avg: 762

Specialty distribution in South Carolina

How Pediatrics Physician compares to other specialties among South Carolina providers

South Carolina providers

Pediatrics Physician share within South Carolina

1. Pediatrics Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Pediatrics Physician share within South Carolina

Specialty board-certification context

Estimated specialty board-certified rate — Pediatrics Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Pediatrics Physician ABMS/AOA estimate

Est. board-certified rate (Pediatrics Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Pediatrics Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

GREGORY JOHNSON, MD appears in the CMS NPPES registry as a Pediatrics Physician provider holding MD credentials at 1115 WREN SCHOOL RD, PIEDMONT, SC, 29673, with a listed phone of (864) 859-0740. NPI 1205936556 was issued on 09/25/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what JOHNSON most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 2,156 prescription claims written by this provider, covering 132 Medicare beneficiaries and totaling roughly $310K in drug spend, split 12% brand-name and 88% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Pediatrics Physician is a high-volume specialty nationwide, with 80,574 enrolled providers across 56 states and an average of 762 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

1115 WREN SCHOOL RD
PIEDMONT, SC 29673

Provider Details

NPI 1205936556
Specialty Pediatrics Physician
Credentials MD
Gender Male
NPI Issued 09/25/2006

Hospital and facility affiliations

Facilities where GREGORY JOHNSON, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

PRISMA HEALTH UNIVERSITY MEDICAL GROUP
PIEDMONT, SC

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for GREGORY JOHNSON, MD. Source: openpaymentsdata.cms.gov.

Total received

$17

Largest payer

AstraZeneca Pharmaceuticals LP

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Typical

GREGORY JOHNSON, MD — brand share 12.0%
Specialty average (est.)

12% brand-name claims vs 88% generic, on 2,156 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

2,156
Total Claims
$310K
Total Drug Cost
132
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
5,730
Total Day Supply
169,281
Brand vs Generic
12% brand / 88% generic
Brand Drug Cost
$265K
Generic Drug Cost
$43K
Antibiotic Claims
47

Patient Demographics

Average Patient Age
70.3 years
Avg HCC Risk Score
0.96
Gender Split
44% female / 56% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What GREGORY JOHNSON, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Atorvastatin Calcium
180
Amlodipine Besylate
159
Losartan Potassium
142
Omeprazole
100
Carvedilol
72
Levothyroxine Sodium
66
Metformin Hcl Er
Metformin Hcl
64
Lisinopril
63
Tamsulosin Hcl
63
Hydrochlorothiazide
62

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Pediatrics Physician Overview

How GREGORY JOHNSON, MD fits within the Pediatrics Physician landscape nationally.

80,574
Pediatrics Physician Providers in US
56
States with Pediatrics Physician
762
Avg Claims per Provider

GREGORY JOHNSON, MD's 2,156 claims are above the specialty average of 762.

Nearby Pediatrics Physician Providers in South Carolina

Other clinicians with the same primary specialty enrolled in South Carolina, drawn from the same CMS NPPES roster as JOHNSON.

Compare Pediatrics Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is GREGORY JOHNSON, MD's specialty?
GREGORY JOHNSON, MD specializes in Pediatrics Physician and practices in PIEDMONT, South Carolina. Credentials: MD.
How much does GREGORY JOHNSON, MD prescribe under Medicare Part D?
In 2023, GREGORY JOHNSON, MD wrote 2,156 Medicare Part D claims totaling $310K in drug costs for 132 beneficiaries.
Where is GREGORY JOHNSON, MD located?
GREGORY JOHNSON, MD is located at 1115 WREN SCHOOL RD, PIEDMONT, SC, 29673. Phone: (864) 859-0740.
What is GREGORY JOHNSON, MD's NPI number?
GREGORY JOHNSON, MD's National Provider Identifier (NPI) is 1205936556, issued on 09/25/2006.
Does GREGORY JOHNSON, MD prescribe more brand-name or generic drugs?
GREGORY JOHNSON, MD's prescribing is 12% brand-name and 88% generic drugs by claim count, with $265K in brand drug costs.
How many Pediatrics Physician providers are there in the US?
There are 80,574 Pediatrics Physician providers across 56 states in the US. The average Pediatrics Physician provider writes 762 Medicare Part D claims per year.
What drugs does GREGORY JOHNSON, MD prescribe most often?
Based on 2023 Medicare Part D data, GREGORY JOHNSON, MD's most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does GREGORY JOHNSON, MD accept Medicare?
GREGORY JOHNSON, MD appears in CMS Medicare data with 2,156 Part D claims and 132 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GREGORY JOHNSON, MD's credentials?
GREGORY JOHNSON, MD's NPI is 1205936556 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology